Improvement in separable buttons or studs



P. P. BARNBY. Separable Button or Stud.

No. 222,441. Patented Dec. 9,1879.

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l I (ll emlllllldd NJEERS. FHUTO-LITNQGMPHER. WASHINGTON. D C.

UETTEE STATES PATENT OEETCE.

FRANK P. BARNEY, OF NORTON MASSACHUSETT IMPROVEMENT IN SEPARABLE BUTTONSOR STUDS.

Specification forming part of Letters Patent No. 222,441. dated December9, 1879; application tiled September 13, 1879.

` To all whom it may concern:

Be it known that I, FRANK P. BARNEY, of Norton, in the county of Bristoland State of Massachusetts, have invented new and useful Improvements in-Separable Buttons or Studs,

of which the following is a speciication.

My invention relates to certain improvements in that class of buttonsand studs known as separable buttons and studs, for

which Letters Patent of the United Statesy were granted to me .underdate of July 8, 1879, No. 2l7,3l8, as fully described herein- ,j after,and shown in the accompanying drawtions of the locking devices andactuatingspring, showing themethod of applying theenlarging-cylinder tothe push-rod of said devices. Figs. 9 and l() are elevations ofthesleeve and post, respectively.

In the above igures of drawings similar `letters of reference areemployed to indicate like parts wherever such may occur.

AA Arepresents the button or stud section proper, which `'may be of anydesired shape, to

which is applied the patch or re-euforce plate' B, having an offsetstamped ont to form the anchor-shaped bearing b and bridge b', adaptedto support, and upon which slides the locking-anchor and push-rod ot'the locking devices D. Instead of making this bearing of oval or othershape, with recesses,'as described in the aboverecitedrLetters Batent, Imake it of a shape corresponding to the locking-anchor on one side ofthepost, with the bridgeor eX- tension, upon which the post is seated, andI leave on the opposite side of the post a sutilcient amount ot metalprojecting above the face of the patch to form two abutments, b2, onopposite sides of the path in which the push-rod reciprocates or slides,against which the free end ot' the actuating-spring d2 abuts that is tosay, the two projecting studs b2 serve as bearings for the free endofthe actuatingspring d2, which is here coiled around the push-rod.

C represents the post, which may be a round one, or it may be made ofany other desired shape. I prefer, however, in buttons or studs of smalldimensions to employ a post having the form ot' an ellipse or doubleconvex, as I have found by experience that this form of post is moredesirable in studs of small dimensions, taking up much less room thanany other form of post relatively to its strength or capacity ofresisting a given amount of strain.

The post C is provided with a recess, c, of suflcient depth to adapt itto straddle the bridge b of the. bearing and permit the free theprojecting end of said spring, as shown in l Figs. 6, 7, and 8. Theinner or free end of the spring d2 abuts against the projecting studs b2formed on the plate B, as above related.

In studs of small dimensions, where the space for. arranging the looking devices is li'inited,l may dispense with the abutments b2 and -use thepost for an abutment to the spring,

and for this reasonIalso use theform of spring above described, as thelimited area of the section A in small studs prevents the use of theordinary form of spring, as shown in my former Letters Patent, or atleast that such form of spring is not as practicable as the coiledspring `the edge of the button, for two reasons: first,

to give the outer end of said rod, to which the pressure for unlockingthe sections is applied,

an enlarged bearing-surface; and, secondly, to enable the manufacturerto make the push-rod and locking lever or anchor of base metal, usingfine metal only for that part of the pushrod which it is designed toenlarge, and which projects beyond the edge of the button. In order toel'ect these two results economically and eiectually without havingrecourse to soldering or brazing, which in articles ofjewelry requirethe employment of' skilled mechanics, I employ the following method,referring more particularly to Figs. 6, 7, and 8: I make the push-rodand its locking-anchor of any suita ble hard base metal, and form uponthe outer end which is to be enlarged a series of teeth or serrations,as shown at D. Then I take a hollow cylinder of tine metal, open at bothends, and slip it onto the end of the push-rod, and by means ot' asuitable tool I press or swage the cylinder D2 onto the rod, so as toforce the softer lnetal of the cylinder into the interstices between theteeth and serrations D on the push-rod, as shown by Figs. 7 and 8, bymeans of which said cylinder is firmly attached to the push-rod end andmade to practically form an integral part thereof', the parts being thusmore intimately connected together than by soldering, and atconsiderable less expense and labor.

Under some circumstances, especially in the high-priced class of thiskind of jewelry, it is also desirable that the end of the push-rodshould be covered from view bythe ner metal, in which case I form theend of the push-rod tapering or attenuated outwardly, and the opening inthe cylinder l)2 of a corresponding taper, so as to leave an increasedthickness of metal at the outer end, and when swaged onto the end of thepush-rod the cylinder will be slightly elongated, and its outer end madeto overlap or close over the end ot' the push-rod, thus hiding it fromview.

E represents the other section of the button or stud, carrying a doubleconvex or elliptical sleeve, F, adapted to lit and slide over the doubleconvex post C.

The sleeve has recesses f on opposite sides, with which engage the sidearms ot' (it'I may so express it) the linkes of the anchor d', and arecess, f', of sufficient depth to straddle the push-rod d and thebridge b of the bea-ring b. When there are no abutnients employed forthe coiled springthe width of therecessf and its depth are such as toadapt the sleeve to straddle the spring and permit it to abut againstthe post C.

Having now described my invention, what I claim, and desire to secure byLetters Patent, is-

1. In a separable button in which the two sections are locked togetherby a locking-lever under the action of a spring, the combinanation, withthe section A, of the plate B, having the anchor-shaped odset b andprojecting abutments b2, to form a bearing for the locking devices, aseat for the post, and an abutment for the actuating-spring, asdescribed.

2. In a separable button, the combination, with the section A, its plateB, having the bearings b b and the abntments b2, and the post C, ot' thelocking-anchor D and springdz, coiled around the push-rod d of saidanchor, all arranged and operating substantially as described, for thepurpose specified.

3. In a separable button, the combination, with the section A, its plateB, having the bearings b b and the abntments b2, the post O, the anchorD, and the spring d, coiled around the push-rod of said anchor, andhaving its outer end rigidly connected therewith and its inner or freeend made to bear upon said abutments b2 of the section E and its sleeveF, all arranged and operating substantially as described, for thepurpose specited.

4. In a separable button or stud, the combination, with the push-rod ot'the locking devices, having its outer end serrated or provided withteeth, of a hollow cylinder surrounding said serrated end, as and forthepurpose specilied.

5. In a separable button'or stud, the combination, with the push-rod ot'the locking de- FRANK P. BARNEY.

Witnesses:

J. E. WILBAR, EMMA E. PRAY.

